#537 resolve footnote reference

.travis.yml

@@ -17,12 +17,9 @@ install:
 script:
   - python ./utils/test_suite.py
   - make makebuilddir
-  - cd build/manual
-  - echo "==================  diagnostic output =================="
-  - cat source/classes/base_classes/NXentry.rst
-  - echo "==================  diagnostic output =================="
+  - pushd build/manual
   - cd build
   #- make latexpdf && cp latex/nexus.pdf html/NeXusManual.pdf
   - tar czf ../../../docs.tar.gz html
-  - cd ../../..
+  - popd
   - ls -lAGh

base_classes/NXentry.nxdl.xml

@@ -59,7 +59,7 @@
 		<doc>
 			The data group
 
-			.. note:: Before the NIAC2016 meeting [#NIAC2016-NXentry], at least one
+			.. note:: Before the NIAC2016 meeting [#]_, at least one
 			   :ref:`NXdata` group was required in each :ref:`NXentry` group.
 			   At the NIAC2016 meeting, it was decided to make :ref:`NXdata` 
 			   an optional group in :ref:`NXentry` groups for data files that 
@@ -80,9 +80,9 @@
 			   :ref:`NXdata` group
 			   is optional, otherwise, it is required.
 
-			   .. [#NIAC2016-NXentry] NIAC2016: 
-			          http://wiki.nexusformat.org/NIAC2016,
-			          https://github.com/nexusformat/NIAC/issues/16
+			.. [#] NIAC2016: 
+		          http://wiki.nexusformat.org/NIAC2016,
+		          https://github.com/nexusformat/NIAC/issues/16
 
 		</doc>
 	</group>